Integrated MnO2/PEDOT composite on carbon cloth for advanced electrochemical energy storage asymmetric supercapacitors

Akbar, Abdul Rehman; Saleem, Adil; Rauf, Abdur; Iqbal, Rashid; Tahir, Muhammad Faizan; Peng, Gangqiang; Khan, Abdul Sammed; Hussain, Arshad; Ahmad, Muhammad; Akhtar, Mansoor; Ali, Mumtaz; Xiong, Chuanxi; Yang, Quanling; Ali, Ghaffar; Liu, Fude

doi:10.1016/j.jpowsour.2023.233181

Cited by 14 publications

(3 citation statements)

References 39 publications

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“…After 100 h of floating time, the specific capacitance of ahCNF-100 decreased by 16.2%, while the ESR of ahCNF-100 increased by 79.1%. Considering the reported criteria for end-of-life of supercapacitor devices (capacitance loss of 20%), the ahCNF-100 exhibits adequate long-term stability over 100 h of the floating voltage test. , In addition, the Coulombic efficiency of ahCNF-100 was about 94% after 100 h of the floating voltage test, indicating good electrochemical reversibility …”

Section: Resultsmentioning

confidence: 95%

“…62,63 In addition, the Coulombic efficiency of ahCNF-100 was about 94% after 100 h of the floating voltage test, indicating good electrochemical reversibility. 64 The electrochemical performance of ahCNF-100 in acidic, neutral, and alkaline aqueous electrolytes was evaluated using 1 M H 2 SO 4 , 1 M Li 2 SO 4 , and 6 M KOH, respectively. Figure S6a shows the CV curves of supercapacitors using ahCNF-100 at a scan rate of 200 mV/s.…”

Section: Electrochemical Performances Of Ahcnfsmentioning

confidence: 99%

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Nitrogen-Doped Activated Hollow Carbon Nanofibers with Controlled Hierarchical Pore Structures for High-Performance, Binder-Free, Flexible Supercapacitor Electrodes

Lim,

Seo,

Kim

et al. 2024

ACS Omega

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Carbon nanofibers (CNFs) are a fascinating electrode material for energy storage devices due to their one-dimensionality, interconnected networks, and chemical stability. However, a relatively low specific surface area of CNFs hinders their use as supercapacitor electrodes. Here, nitrogen-doped hollow CNFs with hierarchical pore structures are prepared via electrospinning of core–shell polymer nanofibers and subsequent carbonization and activation under an ammonia atmosphere. Hierarchical pore structures with micro-, meso-, and macropores are controlled by an ammonia etching effect during the carbonization of polymer nanofibers. In addition, a hollow structure in CNFs is obtained by thermal decomposition of the core polymer during the carbonization/activation. The nitrogen-doped activated hollow CNFs (ahCNFs) exhibited an exceptionally high specific surface area of 3618 m2/g with increased mesopores. Thus, a symmetric supercapacitor using ahCNFs electrodes with a 6 M KOH aqueous electrolyte provides a high specific capacitance of 208 F/g at a current density of 1 A/g, a high energy density of 7.22 W h/kg at a power density of 502 W/kg, a good rate capability, and cyclic stability. Moreover, the freestanding ahCNFs are used for flexible supercapacitor electrodes without any binder. This work demonstrates the great potential of highly porous ahCNFs for high-performance energy storage devices.

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Section: Resultsmentioning

confidence: 95%

Section: Electrochemical Performances Of Ahcnfsmentioning

confidence: 99%

Nitrogen-Doped Activated Hollow Carbon Nanofibers with Controlled Hierarchical Pore Structures for High-Performance, Binder-Free, Flexible Supercapacitor Electrodes

Lim,

Seo,

Kim

et al. 2024

ACS Omega

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“…Carbon fiber substrate in the form of carbon cloth has become a promising material owing to its high performance, low price, extraordinary conductivity, and electrochemical stability. [8][9][10] However, it requests to process and coat it with suitable materials for its effective utilization. Concerning this matter, coating multiple components, and combining the advantages of two or more materials often lead to improved overall performance of the material.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical NiCo@NiOOH@CoMoO₄ Core–Shell Heterostructure on Carbon Cloth for High‐Performance Asymmetric Supercapacitors

Akbar,

Peng,

et al. 2023

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The fabrication of low‐cost, effective, and highly integrated nanostructured materials through simple and reproducible methods for high‐energy‐density supercapacitors is highly desirable. Herein, an activated carbon cloth (ACC) is designed as the functional scaffold for supercapacitors and treated hydrothermally to deposit NiCo nanoneedles working as internal core, followed by a dip‐dry coating of NiOOH nanoflakes core–shell and uniform hydrothermal deposition of CoMoO4 nanosheets serving as an external shell. The structured core–shell heterostructure ACC@NiCo@NiOOH@CoMoO4 electrode resulted in exceptional specific areal capacitance of 2920 mF cm−2 and exceptional cycling stability for 10 000 cycles. Moreover, the fabricated electrode is developed into an asymmetric supercapacitor which demonstrates excellent areal capacitance, energy density, and power density within the broad potential window of 1.7 V with a cycling life of 92.4% after 10 000 charge–discharge cycles, which reflects excellent cycle life. The distinctive core–shell structure, highly conductive substrate, and synergetic effect of coated material results in more electrochemical active sites and flanges for effective electrons and ion transportation. This unique technique provides a new perspective for cost‐efficient supercapacitor applications.

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Tailoring a Multifunctional PEDOT/Co₃O₄‐CeO₂ Composite for Sustainable Energy Applications

Varghese,

Devi K R

2024

Advanced Sustainable Systems

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Energy sources play a crucial role in the development of the society. The gargantuan depletion of fossil fuels creates new glitches in the routine activities of human beings. Electrocatalysts can efficiently produce and store energy and, therefore, have the potential to alleviate this situation. A multifunctional electrocatalyst, Poly (3,4‐ethylenedioxythiophene)/cobalt oxide‐cerium oxide(PEDOT/Co3O4‐CeO2), is synthesized by incorporating mixed metal oxide to 3,4‐ethylenedioxythiophene (EDOT) using the in situ chemical oxidative polymerization method and is employed for both energy production and storage applications. The successful synthesis of the catalyst is confirmed through various characterization techniques. The composite shows a specific capacity of 617.8 C g−1 and a specific capacitance value of 1298.1 F g−1. The hydrogen evolution reaction (HER) analysis shows that the composite requires a low overpotential of 163.1 mV at a current density of 10 mA cm−2. Synthesized electrocatalysts can effectively handle the energy related issues prevailing in the society.

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Integrated MnO2/PEDOT composite on carbon cloth for advanced electrochemical energy storage asymmetric supercapacitors

Cited by 14 publications

References 39 publications

Nitrogen-Doped Activated Hollow Carbon Nanofibers with Controlled Hierarchical Pore Structures for High-Performance, Binder-Free, Flexible Supercapacitor Electrodes

Nitrogen-Doped Activated Hollow Carbon Nanofibers with Controlled Hierarchical Pore Structures for High-Performance, Binder-Free, Flexible Supercapacitor Electrodes

Hierarchical NiCo@NiOOH@CoMoO₄ Core–Shell Heterostructure on Carbon Cloth for High‐Performance Asymmetric Supercapacitors

Tailoring a Multifunctional PEDOT/Co₃O₄‐CeO₂ Composite for Sustainable Energy Applications

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Integrated MnO2/PEDOT composite on carbon cloth for advanced electrochemical energy storage asymmetric supercapacitors

Cited by 14 publications

References 39 publications

Nitrogen-Doped Activated Hollow Carbon Nanofibers with Controlled Hierarchical Pore Structures for High-Performance, Binder-Free, Flexible Supercapacitor Electrodes

Nitrogen-Doped Activated Hollow Carbon Nanofibers with Controlled Hierarchical Pore Structures for High-Performance, Binder-Free, Flexible Supercapacitor Electrodes

Hierarchical NiCo@NiOOH@CoMoO4 Core–Shell Heterostructure on Carbon Cloth for High‐Performance Asymmetric Supercapacitors

Tailoring a Multifunctional PEDOT/Co3O4‐CeO2 Composite for Sustainable Energy Applications

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Hierarchical NiCo@NiOOH@CoMoO₄ Core–Shell Heterostructure on Carbon Cloth for High‐Performance Asymmetric Supercapacitors

Tailoring a Multifunctional PEDOT/Co₃O₄‐CeO₂ Composite for Sustainable Energy Applications